Surveyor 5September 11, 1967

Surveyor 5 develops a helium regulator leak and has
to land using a hastily and radically re-designed descent profile. The
soft landing is flawless and the craft performs even better than its predecessors.
During its first lunar day, it returns over 18,000 television images.

On October 15, 1967, after spending two weeks in the deep freeze of a
lunar night, Surveyor 5 responds immediately to the first turn-on command
and resumes operation until December 17.